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Shimano,Black,ERDM3100SGS Alivio Alivio M3100 Rear derailleur, 9-Speed, Shadow Design, SGS Long cage

Q: Is this compatible for 8 speed?

Not perfectly - the m3100 model is really meant for 9 speed

Q: Will this replace the stx rc on a Trek 7300 8 speed?

Shimano's Compatibility charts won't show this "9-speed" derailleur as compatible with 8-speed components, but it should work just fine. Shimano 8-speed shifters will work. This RD can handle larger cogs than were common in the 8-speed era, up to 36t largest cog, but assuming you have 11-32 it'll work. I have an stx rc RD on one of my bikes, and wouldn't hesitate to try this as a replacement.

Product ID: 241101188

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Details

Brand
SHIMANO
Color
Black
Material
other
Item Weight
0.2 Kilograms
Mounting Type
Braze-On Mount

⚙️9-speed precision shifting

🛡️Shadow RD tech for derailleur protection

🚵‍♂️SGS long cage for smooth trail performance

Frequently Bought Together

Shimano,Black,ERDM3100SGS Alivio Alivio M3100 Rear derailleur, 9-Speed, Shadow Design, SGS Long cage

SHIMANO Alivio SL-M3100 Alivio Shift Lever, 9-Speed, Band on, Right Hand,Black

Description

🚴‍♂️ Shift into the future with Shimano’s stealthy power!

SGS LONG CAGE ADVANTAGE - Enhanced chain capacity for versatile gearing, perfect for trekking and challenging trails.
OPTIMIZED SPRING TENSION - Prevents chain stay stops, ensuring consistent performance even on rugged terrain.
SEAMLESS 9 SPEED SHIFTING - Experience flawless gear transitions with Shimano’s HyperGlide system, engineered for durability and precision.
TRAIL READY SHADOW DESIGN - Ultra-flat profile minimizes damage risk from trail obstacles, keeping your ride smooth and worry-free.
BUILT TO LAST WITH SHIMANO QUALITY - Backed by a 2-year manufacturer warranty, combining reliability with cutting-edge cycling tech.

The Shimano Alivio M3100 Rear Derailleur features a 9-speed HyperGlide system and Shadow RD technology for superior trail durability and smooth shifting. Its SGS long cage design and optimized spring tension prevent chain issues, making it ideal for trekking and trail cycling. Compact and robust, it’s backed by a 2-year warranty, ensuring reliable performance on every ride.

Specifications

Product Dimensions	6.69"L x 4.43"W x 3.94"H
Manufacturer	Shimano
UPC	192790621159
Global Trade Identification Number	04550170621155
Item Package Dimensions L x W x H	7.83 x 4.72 x 4.21 inches
Package Weight	0.38 Kilograms
Item Dimensions LxWxH	6.69 x 4.33 x 3.94 inches
Brand Name	SHIMANO
Warranty Description	2 Year Manufacturer
Model Name	C8C086
Suggested Users	unisex
Number of Items	1
Part Number	ERDM3100SGS
Model Year	2021
Style	Single
Included Components	Bike Parts
Size	Standard
Sport Type	Cycling

Have a Question? See What Others Asked

sirve para 2x9 de 11-40?

Is this compatible for 8 speed?

Will this replace the stx rc on a Trek 7300 8 speed?

Does it come with the hanger bolt?

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